# MultiplyLock

> Lock your apps with a simple math challenge. Solve to unlock.

Canonical page: [https://chrome-stats.com/d/com.bigsmile169.multiplylock](https://chrome-stats.com/d/com.bigsmile169.multiplylock)

## Overview

- **ID:** `com.bigsmile169.multiplylock`
- **Platform:** Android
- **Type:** Android app
- **Status:** Available
- **Publisher:** bigsmile1004
- **Category:** EDUCATION
- **Downloads:** 381
- **Version:** 9.0
- **Last updated:** 2026-08-22
- **First published:** 2025-05-23
- **Publisher country:** KR
- **Size:** 31 MB
- **Data as of:** 2026-09-12
- **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=com.bigsmile169.multiplylock)
- **Website:** [https://bigsmile-1004.web.app](https://bigsmile-1004.web.app/)
- **Privacy policy:** [https://bigsmile-1004.web.app/privacy.html](https://bigsmile-1004.web.app/privacy.html)

## Description

This app is a unique app locker that uses multiplication questions instead of patterns or PIN codes. To access a locked app, users must solve a basic math problem—making security a little more fun and educational.<br><br>This simple and useful app is ideal for parents who want their children to practice math before using games or video apps.<br><br>Key Features:<br>1. Lock apps with multiplication questions<br>2. Random questions every time<br>3. Bright and friendly design<br>4. Track learning progress with daily counts<br>5. Customize difficulty levels<br><br>Required permissions:<br>- Accessibility Service: To detect locked app launches<br>- Boot Completion Receiver: Ensures app protection continues after device restart<br>- Battery Optimization Exemption: Maintains reliable background operation<br><br>Whether you&#39;re a math enthusiast, a parent, or someone looking for a creative way to lock apps, Multiply Lock offers a fun and functional solution.<br><br>All permissions are used only for core functionality. We respect your privacy and do not collect unnecessary data.

## Rankings

- #1,476,262 — Overall

## Permissions and access

### Permissions

- `android.permission.ACCESS_ADSERVICES_AD_ID`
- `android.permission.ACCESS_ADSERVICES_ATTRIBUTION`
- `android.permission.ACCESS_ADSERVICES_TOPICS`
- `android.permission.ACCESS_NETWORK_STATE`
- `android.permission.FOREGROUND_SERVICE`
- `android.permission.FOREGROUND_SERVICE_SPECIAL_USE`
- `android.permission.INTERNET`
- `android.permission.POST_NOTIFICATIONS`
- `android.permission.QUERY_ALL_PACKAGES`
- `android.permission.RECEIVE_BOOT_COMPLETED`
- `android.permission.REQUEST_IGNORE_BATTERY_OPTIMIZATIONS`
- `android.permission.WAKE_LOCK`
- `com.android.vending.CHECK_LICENSE`
- `com.bigsmile169.multiplylock.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION`
- `com.google.android.finsky.permission.BIND_GET_INSTALL_REFERRER_SERVICE`
- `com.google.android.gms.permission.AD_ID`
- `com.google.android.providers.gsf.permission.READ_GSERVICES`

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Source: [Chrome-Stats](https://chrome-stats.com/d/com.bigsmile169.multiplylock)